#include <stdio.h>
#include <assert.h>
extern int my_strlen(char* s);
//char s[] = "jaing";
//printf("%s", my_strlen(s));
int my_strlen(char* s)
{
	int i = 0;
	assert(s);
	while (s[i] != '\0')
	{
		i++;
	}
	return i;
}